Finding the Fourth Proportional to 121,109.13, 167,130.60 and 68,117.13
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Solution
The fourth proportional to 121,109.13, 167,130.60 and 68,117.13 is: 94,001.64
Step by Step Solution
- Step 1: Write the proportion equation
121,109.13 : 167,130.60 = 68,117.13 : x - Step 2: Convert to fraction form
121,109.13/167,130.60 = 68,117.13/x - Step 3: Cross multiply
121,109.13x = 167,130.60 × 68,117.13 - Step 4: Simplify right side
121,109.13x = 11,384,456,807.18 - Step 5: Solve for x
x = 11,384,456,807.18/121,109.13 - Step 6: Final answer
x = 94,001.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.